Create a realistic, movie-style depiction of Tiamat. She stands in a dark deep-sea environment, surrounded by bioluminescent and transparent deep-sea creatures that emit a faint glow. She has light blue shimmering, translucent scaled skin with visible fish scales, elongated horns, and light blue hair. She is wearing clothing inspired by Sumerian civilization and holds a trident in her hand. Tiamat embodies both snake and dragon features, with wings that resemble fins, but her face looks human. She has clawed hands and a powerful tail. The seabed beneath her is jagged and mysterious, covered in ancient ruins and coral-like structures, glowing with an eerie blue light.